Switch



M. L. JEFFREY May 2, 1950 SWITCH 2 Sheets-Sheet 1 Original Filed April 24, 1943 y 2, 1950 M. L. JEFFREY 2,506,505

SWITCH 2 Sheets-Sheet 2 Og iginaI Filed April 24, 1943 Hrs alto A141 Patented May 2, 1950 2,506,505 ,SWJ Q Max Leroy Jeffrey, Shaker Heights, "Ohio, as-

signer to 'The National Acme Company, "Eleve- :land, Ohio, acotporationofohio v,Qriginal application April 24, 1 9513, Serial No.

484 316, ew at izeleeze; s w rarliaiy ,25, 1947. Divided and this application mag ne-7; "194-7 Serial m nim 2 Q aimelo-$90 ,15

struction. 1I;n additionsl have provi e an. a sembly w ich ma e qper-ated eit y. pus a button oeb rpingia knobiansiv hese knobs or butto s are-eon .plet lv intereha geebl a any of t e tat ons- .ssti othe vohi ete =of' the .zinieniion. an t e in o t onitee i elmo teennerent rom th ol owin of an embodiment here -Weighed is. strated b th e eompen iee P1 6? s eerisi; ste r-e er ofthie Sp fi at oneiaeepeois-th evea ienieie improveme o mv-BaieniNoi eifi -o fi ptembe 1, 1942' v. a A .7 A

In the drawings;

F i e fmhtelete iqq v wo es ene scutcheon plate. in which switch of n y invention isi'peotporate Fig. 2 is ,a siderelev ational yiewof the panel o vwit .eert in in it brok n m en shown in sections andshowing insideelevation the switches mounted on the back of the paneL; 3 s a rea viewiin eleva ion o t e an of t e s it effi .1 with tw of t s t hes remo ed e s h wee ie of W p et the opee n flout Fig.4 is a.side eievationalviewotone of the turn-type of button :used in connection with the switch of my invention;

" 'P e 5 is e ea eletetioeel:v ewefih b t n of i VT-hrouehoei ihes ewieesii-ls pests ha e n des n ted b li eferene f-ehe eotete- General y; spa 'naztheapparatus adapt its l vetv-emeientlym i; llfiaflfii iimswbemswitchesarfl.

desired for starting, stopping or jogging ,a machine. inthiseaseone switcha-ssembly adapts itse flior allthreeof theiservicesmentioned. By lsucstitutingidifieiventbuttonsin the switch panel the switch cambe-made topper-ate asapush buttons-switch where-you pushito close the contacts or,-push to. opengthe contacts, the, operation being such that when ,the. fin er is removed from the utt n. the switch ietumst its former position; or; aitum type but on: uch as sh w i th J run position may be used which enables the witch co tacts .t iremain i an. opened r l s d posi ion. dependin von t e di e tion and pos tion o-wh ch the buttonl-istur edv- I-n y ev n he same switchmechanism .sufiices for. all operations.

Although apartioular=tvpe f supportin panel or eo tohe n .p te i shown --in the rawin i willbe observed thatttheznumber of stationsois m rel amatte ofoh ice .andth y ay be n,- o ea ol r d ease innumberlto suit the particula condit ons wh r trol is des red.

lnE g. 1,;by way f illustrati :1 have shown a panel or escutcheon plate 1H} having edge openme :Ll whiohenable-theiplateto be secured to asuitable support or i amusin The panel isprovided iniits nid portion with three open n s i the eth oush which .ar vertigallyaligned. A rela ively .lowannular boss ;l 3 s provide aro deach of: the, openings 12 onthe front side-of ,the panel. ,Thevrear of the panel around. each of the openin s i p ovid with an 'r ieeularl iehape p ojecti n. or boss 14, the contour of-whi hisestsho tw in Fi 3. a d w ch oonst u s ho sin .i r th o rati b tton an a tsyppor or t v .switehfes em l e Each ofithee nr ieetin i sin s ha a nla ed ore i5 extend n t wa dsth penin 1 I 2 and ter inatinszin ash ulderit- The penine or bore 12. receives; in slidin en agement the cylindricalend ill iaepushbut on and-th loos .ifii i is .reooives aT-flan e ifionethe-epush button. The push button may be moved inwardly fromthe position showntin ig.;2,.its utward m v m n ein l mitedby; the flange. i8contactingswith theshoulder L6. The push,buttongis,, also providedwith an annula groove is which surrounds a central pin 21] which extendsifiush withthe inner face of the flange |,8.-and. is. adaptedto. contact the operating pin :2 I of the "switch mechanism indicated i genenal1y,at;22.

As best shown in Fig. 3, each of the projecting bosses is provided with two laterally extending bosses 24 extending above and below a center line through the main boss and provided with threaded openings 25 for the reception of screws 2% which extend through bosses on the switch assembly housings and hold them in place on the bosses 2s. Three such switch assemblies are provided in this specific instance each of which has sets of terminal screws 21 and 28 which extend through the end of the housing into strips which carry fixed contacts on the interior of the housing.

Operation of the switch 22 in the start and stop positions, as shown in Figs. 1 and 2, is effected by pushing the button I! inwardly, the pin 26 of the button engaging the operating pin or plunger 2| of the switch which actuates the mechanism, later to be described, inside of the switch housing. It will be noted that these push buttons lie flush with the surface of the panel and the boss l3 and therefore cannot be accidentally operated, since it is necessary to push the button inward depressing it below the front surface of the panel in order to operate the switch mechanism.

The operating lever or button for the jogrun position, as previously stated, is a turn type of button, being so designed that it may be turned to hold the contacts in the proper position for the jog or run position. This is effected by a cam action of the button which either holds the plunger 2| of the switch 22 in or out, the plunger being shown in the out position for run and it being contemplated that it will be cammed inward for jog.

As best shown in Figs. 2, 4 and 5, the jog button is provided with a handle or finger grip which is adapted to protrude from the face of the panel ill. The handle is supported by a A cylindrical body 3| which is rotatably journalled in the opening l2 in the panel. The body 3| has integral therewith a pair of segments 32 having surfaces 33 which are semi-circular and adapted to ride in the enlarged portion it of the bore. A central bore 3a is provided which extends from the rear of the button into the body 3| toward the handle (Figs. 4 and 5).

The wall of the body SI which defines the bore 3% between the segments 32, is provided with two diametrically opposed cam surfaces each of which comprises a low flat portion 35, an inclined and, rising portion 3?, and an upper portion 38 which has a seat the purpose of which will hereinafter more clearly appear. As best shown in Fig. 3 the bosses It are provided with diametrically opposed notches 39 extending from the rear edge of the boss towards the panel. These notches provide guideways for a pin 40 which extends across the opening and is adapted for engagement with the cam surfaces 36 of the button. It will be seen that when the button is rotated counterclockwise from the positions shown (Figs. 1 to 3) that the cam. surfaces 37 engage the pin and force it outward toward the edge of the boss, while rotation of the pin is prevented by the guideways.

In the position as shown in Fig. 2 this pin rests on lower flat surface 36 and when the but ton is rotated clockwise as viewed in Figs. 3 and 5 the cam surfaces 37 engage the pin and push it outward in the guideways until it comes to rest in the seat 38. The button may be rotated approximately 90 degrees during this operation and the amount of rotation is limited by the faces 4! on the segments 32 which engage with the pin 40.

As can best be seen from Fig. 2, the central portion of the pin also lies against the end of the operating plunger 2| of the switch. Therefore, when the button is moved counterclockwise the pin is moved outwardly in the slots 39 and the central part of the pin bearing against the plunger 2| moves the plunger to the right as shown in Fig. 2. The pin 40 will seat in the depression 38 and hold the plunger 2| in its inwardly pressed position. When it is rotated in the opposite direction the pin is moved out of the notch 38 and the spring pressure from the plunger 2| on the pin fill is suificient to cause the camming action of the pin 40 on the cam 31 to rotate the button back to its original position where the pin is seated in the bottom fiat portion 36.

It should be noted that each one of the bosses is provided with the notches 39 and therefore the mechanism shown in the lower jog-run position may be substituted in any of the other positions when desired or all of the positions may be controlled by the turn-type button or all of them controlled by push type buttons.

It will also be seen that I have provided a push button control that is exceedingly versatile inasmuch as substantially the same mechanism may be used for either a push or a turn-type button switch by merely substituting a cam type button and pin for the simple button.

Having thus described my invention, I am aware that numerous and extensive departures may be made therefrom without departing from the spirit or scope of the invention as claimed herein.

1. An operating mechanism of the turn button type for a switch mechanism including a front panel, a switch housing containing said switch mechanism and an operating member extending from one side, said housing adapted to be secured to said panel with the operating member extending in the direction of the panel, said panel being formed with a rearwardly extending boss,

a bore extending through said boss and a counter-bore concentric with said bore at the end of the boss remote from said panel, diametrically opposed slots formed in the walls of said counterbore extending the full length thereof, a cross pin slidably disposed with its ends in said slots and extending diametrically across the counter bore having its mid portion in engagement with the operating member of said switch mechanism, a turn button having a shank rotatably journalled in said bore and having oppositely disposed segmental flanges in bearing and retaining engagement with the counterbore and being formed with cam faces between said flanges for engagement with said cross pin at regions adjacent to the end portions of said pin.

2. An operating mechanism of the turn button type for a switch mechanism including a front panel, a switch housing, containing said switch mechanism and an operating member extending from one side, said housing adapted to be secured to said panel with the operating member extending in the direction of the panel, said panel being formed with a. rearwardly extending boss, a bore extending through said boss and a counterbore concentric with said bore at the end of the boss remote from said panel, diametrically opposed guide slots formed. in the walls of the counterbore extending the full length thereof, a. cylindrical cross pin the ends of which are loosely 5 disposed in said slots, said pin being restrained from longitudinal or sidewise movement by the walls of the slots, the mid portion of said pin being in operative engagement with said operating member, a turn button having a shank rotatably journalled in said bore, and a handle portion extending forwardly of said panel and having oppositely disposed segmental flanges in bearing and retaining engagement with the counterbore and being formed with cam faces between said flanges for tangential engagement with said cross pin at regions adjacent to its end portions.

MAX LEROY JEFFREY.

6 REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,889,175 Evans Nov. 29, 1932 1,987,571 Hardage Jan. 8, 1935 2,123,058 Maslin July 5, 1938 10 2,276,698 Pierce Mar. 17, 1942 

